Extension-table.



v C. E. JOHNSEITi EXTENSION TABLE. APPLIOATION FILED DEo.2s,19o7.

907,503. Patented 1380.22, 1908.

3 SHEETS-SHEET l.

C. H. JOHNSEN. EXTENSION TABLE.

APPLICATION FILED Imc. 28,1907.

907,503. Pand Dee. 22, 1908.

3 SHEETS-SHEET 2.

C. H. JOHNSEN. EXTENSION TABLE. APPLIOATION FILED DB0.28,1907.

907,503.` Patented Dec. 22, 190s.

3 SHEETS-SHEET 3.

. 3 Mam/mim.

Umrnn srA'rEs PATENT onirica.

v CHARLES H. JoHNsEN', ornARvEY, ILLINOIS. Y

v EXTENSION-TABLE.

To all wzom 'it may concern:

Be it known that I, CHARLES H. JoHNsEN, a citizen of the United States, residing 'at Harvey, county of Cook, and State of Illin ois, have invented certain new and useful Improvements in Extension-Tables, of Which the following. is a speciiication.

My invention relates to extension tables and the Object of my invention is to provide an extension table which may be easily operated to extend the end or'main portions of and Iwhich may 1 5 the table and .which will automatically place a plurality of leaves in position successively leaves being automatically and successively retracted beneath the table'. top. Other objects will appear hereinafter.

My invention consists generally in a table comprising the two. end portions adapted to be moved toward or from eachother in com.

bination with a pair of levers pivotally connected beneath one of the end port-ions, a plurality of leaves arranged one above the other and supported upon the free ends of said le'- vers when the table is in closed position, means for intermittently raising said levers as the table is extended to raise the leaves successively into position level with the table -top and means for locking the leaves in position.

My invention further consists in a table comprising the two end portions in combinationwith means for moving said. )ortions toward or from each other, a pair of levers pivotally tions,` a plurality of leaves arranged one above the other and supported upon the free ends of said levers when the table is in closed position, means for intermittently raising said levers as the tablel is extended to raise the leaves successively in position level with the table top, means for locking the first leaf to the edge of the opposite end portion as it is raised into positionand means for locking the successive leaves in a like manner to the preceding leaf, and means adapted to pass bebe as readily contracted, the 1 mounted beneath one of said end por- Specification of Letters Patent.- Appucation mea December 28,1907. serial No, 408,400.

neath the leaves -to support. the same as the I ends of the levers are withdrawn from beneath them.

My invention further consists in certain Patented Dec. 22, 1908.

means' for preventing endwise movement o'f the leaves 1n order that ,the coacting locking members may properly register and to bring the edges of the leaves into alinement with each other and with the end members of the table.

My invention further consists lin various details of construction-and arrangements of parts all as will be hereinafter fully described and particularly pointed-out in the claims.

My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification and in which, l

Figure' 1 is a bottom plan view of a table embod ing my invention in its preferred form, ig. 2 is a side elevation of the table with the depending molding broken away to illustrate the mechanism, Fig. 3 is a vertical section on the line 1:*x of Fig. 1, Fig. 4 is a vertical cross section on the line y-y of Fig. 1, Fi 5 is a side elevation of the table in close position, Fig. 6 is a detail of the device for extending andretracting the ends of the table, Figs. 7 and 8 are plan and edge views respectively of one of the leaves, Fig. 9 is a detail bottom plan view of a portion of the leaves and the adjacent end members illustrating the locking members, Fig. 10 is a section on the line z-z of Fig. 9, Figs. 11 and 12 are details of the leaf raising mechanism, and Fig. 13 is a detail longitudinal section illustrating the leaf support-ing device.

Referring to the drawings 1 and 2 indicate the ends or the main portions of the table top and 3 3 and 4 4 the legs fixed to the respective ortions. To extend or contract the table provide av suitable screw device operable by a' crank from one end of the table. 5 indicates the screw arranged longitudinally of the table beneath the top and parallel therewith. The screw, 5 is fixed to a st-u'd or bracket 6 depending from the portion, 1 ofthe tabletop and telescopes within a sleeve or tube, 7 rotatably connected to theA portion, 2. The sleeve, 7 is provided with a threaded portion, 8 to engage the threads of the screw, 5, and is supported in bearings in the depending brackets 9 and 10.4 sleeve 1s rotatably mounted but longitudi- The v l-and 2 of the table will be moved toward or from each other. It is evident that a screw of any desired pitch may be employed but I prefer to employ a screw having a triple or levers as at 18.

uadruple thread in order to open and `close l t e table more quickly.

Pivotally mounted beneath the table and to one of the portions, 1 or 2 are a pair oflevers 15.-15. It will be obvious that the levers may be attached or fixed to eitherl of the portions, 1 or 2 but I have illustrated them upon the'latter. `rlhe levers are attached to the bracket, 10 the saine affordinflr an efficient means of attachment.

Pivotally connected to the free ends of the levers, 15 is one of the leaves, 16, 16 and 16 indicating the remaining leaves which are superimposed upon the leaf, 16 when the table is closed or in contracted position.

The leaf 16 is provided with the ears or lugs,

'17 which are pivotally connected to t ie Suitable means are provided to actuate the arms or levers '15 uiter- -mittently as the table is extended to raise the leaves successively into position, and to lock the leaves against further movement after having been placed in position. To this end I provide thea-rms or levers 15 with a cani shaped lower edge and provide suitable .means fixed to the portion', 1 of the table for copei'ation therewith to actuate the levers. rThe cani shaped edge com rises the straight portions, 15, 15b, 15C,an 15'j connected by the intermediate portions, 15".

Fixed to the portion, 1 of the table are a air of rods or arms, 20,-2() which extend )eneath the portion, 2 of the table and are provided at their ends with rollers, 21 which engage the cam edge of the levers, 15. The arms or rods, 20 are preferably connected to the bracket, 6 and slide through guides or ways, 22 .formed upon the bracket, 9 which maintain the rollers 21 in position. When the table begins to open the roller, 21 travels along the portion, 15a of the arm which at that time is parallel with the table top. As soon as the gap between the ortions, 1 and 2 is of suilicient width to receive the leaf, 1'6", the roller, 21 engages the first portion, 15e raising the levers sufficiently to lift the leaf into position. The portion, 15b is then horizontal or parallel with the tabletop and the roller travels along said portion until the table is opened sufficiently to receive the leaf, 16', after which the roller, 21 engages the tion and so on until all of the leaves are in osition. The weight of the leaves holds the evers in engagement withthe rollers, 21, hence, as the table is closed as soon as the roller passes from one straight portion of the cani edge to the other the leaves drop sufficiently to slide beneath the next succeeding` leaf and so on until the table is in closed po sition as shown in Fig. 5. It should be noted at this point that the portions, 1 and 2 of the table are so proportioned that when the leaves are arranged bene ath the inner end of the portion, 1 they will lie in the center of the table; in other words the length of the portion, 1 is equal to the length of the portion, 2 Jlus the width of one of the leaves. It will e noted that, in opening the table, after each leaf is raised in position the remaining leaves are drawn from beneath it, hence means must be provided for locking each leaf against further movement after it` is raised into position. To this end i provide each leaf with means for automatically locking it to the portion, 1 of the table or 'to the preceding leaf. This may be accomplished in various ways, but I find that shown in the drawings simple and efficient. Secured to the bottom of each leaf are a pair of metal plates, 23 which project beyond the edge of the leaf in the direction of the portion, 1 of the table andequipped with pins, 24 which extend upwardly to engage holes, 25 formed in the lower face of the portion, 1 of the table and the several leaves. As each leaf is raised into position, the pins, 24 engage i the holes, 25 in the portion, 1 or in the preceding leaf and prevent furtherl movement of the. leaf longitudinally of the table. As the lower leaf is the only one which is attached to the levers, 15 and as the others merely rest thereon means must be rovided for maintaining the superimposed eaves in position and for moving them forwardly int-o position to be raised7 or baekwardly under the table. To this end the leaves are ar ranged between vertically disposed guides fixed to the poit-ion, 2`of the table. These comprise a pair of members, 26, depending from the portion, 2 of the table and having their edges extending beyond said portion to form ways for the leaves, the leaves being provided with notches, 27 to receive them, and the members, 28 arranged upon the op posite sides of the leaves. The members, 26 and 28 are fixed to the portion, 2 of the table and move therewith and the leaves are vertically movable between them. The members, 28 are fixed to telescoping devices secured to the portions, 1 and '2 of the table. These devices are preferably arranged between the legs of the table but may be fixed thereto in any other suitable manner.

Secured to the legs, '1 are the tubular members, 29 into which telesco )e the members,

ict

are fixed to the ends of the members, 29 and extend upwardly into longitudinal grooves,

31 formed in the under face of the portion, 1 of the table, the upper ends of the members being flanged as at 32 to rest against the top. of the groove, ,31. As the table is opened the members,l '2S push the leaves, llt-16" forwardly maintaining them in position above the leaf, 16. As each leaf is raised intoy position by the cam levers, 15 the inemlers, 28 pass beneath them and support them in position after thefremaining leaves are drawn from beineaththem, the leaves being grooved as lat 31 to receive the upper edge of said members. The edges of the plates, 2f are arranged to `overhang the grooves, 31 to such an extent as to extend beneath the flange, 32. This prevents the leaves being raised above the level of the. table top. To prevent the last or bottom leaf, 16 from raising above the table top it is provided with the lugs, preferably formed as extensions of the strips, or plates, 23 and which engage the bottom face of the portion, 2 of the table top. The table is preferably provid ed with a depending finishing molding, 34, the bott om. edge of which is iiush with the bottom of the leaf, 16 when the table is in closed position as shown in Fig. 5, the whole presenting a neat appearance and the mol'ding serving to screen the greater part of the mechanism from view; llaving described my invention what I claim as new and desire to secure by Letters Patent is:

1. An extension table comprising the two end portions adapted to be moved toward or from each other, in combination with a plurality of leaves arranged one above the other beneath the table top when in closed position, a lever pivotally connected to one portion of the tab e and having its free end arranged beneath said leaves and means for intermittently raising said lever as the end portions of the table are moved apart toraise the leaves successively into position flush with the top of the table, substantially as described.

2. An extension table comprising the two end portions adapted to be moved toward or from each other, incombination with a pair of levers pivotallv mounted beneath one of said end portions, a plurality of leaves arranged one above the other when the table is' in closed position and supported upon the free ends o f said levers and means for intermittently raising said levers as th'e table is extended to raise the leaves successively into position flush with the table top, substantially as described.

3. An extension table comprising the two end portions adapted to bemoved toward or from each other, in combination with a plufnlifv nf leaves arraheed one, above the other l beneath the table top when in closed posil tion a lever pivotally connected to one porl tion of the table and having its free end ari ranged beneath said leaves and means upon l the opposite end portion lor intermittently i 'raising said lever as the table is extended to l raise the leaves successively into position flush with the table top, substantially as described.

4. An extension table comprising the two end portions adapted to be moved toward or from each other, in combination with a plurality of leaves arranged one above the other beneath the tabletop when in closed position, a lever p'ivotally connected to one portion of the table and havingits free end arranged beneath said leaves, said lever having a cam shaped lower edge, and means fixed to the other portion of the table for engaging saidcam shaped edge to raise said leaves successively into position llush with the table top, substantially as described.

5. An extension table comprising the two end portions adapted tosbe moved toward or from each other, in combination with a plurality of leaves arranged one above the other beneath the table top when in closed position, a air of levers having cani shaped lower e ges pivotally connected to one of said end ortions and having their free ends arrangedeneath and supporting said leaves and means fixed to the other end portion and extending beneath said levers into engagementlwitinthe cam shaped portion thereof and supporting said levers and said leaves, substantially as described.

6. An extension table comprising the two end portions adapted to be moved toward or from each other, in combination with a plurality of leaves arranged one above the other lmneath the table top when in closed position, a lever pivotally connected to one ortion of the table and having its free en( arranged beneath said leaves, means carried by the same portion of the table for maintaining said leaves in fixed longitudinal relation therewith while being raised or lowered, means forintermittently raising said lever as the end portions of the table are moved apart to raise said leaves successively into position flush with the top of the table, and means upon the edges of' the leaves for locking the successive leaves against longitudinal movement after they are raised into position, substantially as described.

7. An extension table comprising` the two end portions adapted to be moved toward or l'rom each other, in combination with a plurality of leaves arranged one above the. other and beneath one of said end portions, a lever pivotally mounted beneath the other end portion and extending beneath said.leaves, means for intermittenti raising said lever as the end portions of t ie, table are moved apart to raise the leaves successively into poname to this specieatin in the presence of sitin flush with the table ('Qp and suitable two subscribing Witnesses.' y

gui es for maintaining sai leaves in position one above the other When beneath the CHARLES H' JOHNSEN' 5` level of the table top, substantially as de- Witnesses scribed. FRANCES E. SHEEHY',

In testimony' whereof I have signed my LYrA RINKENBERGER. 

